diff --git a/rtchallenge/src/world.rs b/rtchallenge/src/world.rs
index de7c93f..126fd06 100644
--- a/rtchallenge/src/world.rs
+++ b/rtchallenge/src/world.rs
@@ -2,7 +2,7 @@ use crate::{
     intersections::Intersections,
     lights::PointLight,
     materials::Material,
-    matrices::{Matrix2x2, Matrix4x4},
+    matrices::Matrix4x4,
     rays::Ray,
     spheres::{intersect, Sphere},
     tuples::{Color, Tuple},